Breas Z2 auto. Auto on/off not working correctly

The last few days I have issues with the start stop option.
I bought the Z2 auto November 6 2023. Still under warranty

Issue with the unit that on the moment the unit will not start anymore with the auto on/ off switched on.
If it does work (sometimes) it will switch off if take of my mask but after that Z2 start blowing are after a minute or so and stops again and this repeats several times.
I didn’t changed my mask or any settings. I did try to in apap 1 ,2 and three and also with the cpap settings but same issue.
When it does work and I removed mask and tube from unit completely it still goes on and off all by itself.

I replaced intake filter with a new one. Tried a different mask but still same issue. Till a couple of days ago it all worked fine.
I am just connected to main power so battery issue.

Any idea what I can try?